Which bacteria are obligate intracellular parasites?
Answer: Chlamydia and Rickettsia
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Bacteriology
- A 19-year-old man who recently went camping in the northeast United States presents to the student health clinic at his college with fever, headache, and a rash around both his ankles and wrists. What is the most likely pathogen, how is it transmitted, and what would the treatment of choice be?
- A 29-year-old woman and her husband seek your consultation for an inability to conceive. After a thorough workup, you believe the cause to be an undiagnosed infection in the woman. Examination reveals mild cervical motion tenderness; Gram stain of cervical secretions shows neutrophils but no organisms. The inability of the causal bacteria to produce what substance causes it to be an obligate intracellular parasite?
- A 24-year-old sexually active man presents with dysuria and urethral discharge. Gram stain of the discharge reveals neutrophils but no gram-negative diplococci. What is the diagnosis and treatment?
- How does C. bumetii differ from other rickettsiae?
- What are the symptoms of Q fever?
- What disease does C. burnetii cause? How does C. bumetii spread?
- What class of antibiotic can be used for all rickettsial infections?
- What causes rickettsial pox?
- What is endemic typhus, and how is it spread?
- What is epidemic typhus, and how is it spread?
- Where does the rash related to RMSF start? Where does it spread to?
- What is Rocky Mountain spotted fever (RMSF)?
- What is the Weil-Felix reaction?
- What symptoms are associated with most rickettsial infections?
- How are rickettsiae transmitted?
- What is the appropriate therapy for chlamydial neonatal conjunctivitis?
- How are Chlamydia infections treated?
- How are C. pneumoniae and C. psittaci transmitted?
- What vascular changes may Chlamydia pneumoniae elicit?
- What disease is caused by Chlamydia pneumoniae?
- What disease is caused by Chlamydia psittaci?
- How is LGV diagnosed?
- What are the clinical manifestations of lymphogranuloma venereum (LGV)?
- What type of arthritis is associated with Chlamydia?
- What is pelvic inflammatory disease?
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